Privilege escalation in IBM AIX

1) Privilege escalation

EUVDB-ID: #VU48923

Risk: Low

CVSSv3.1: 7.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-4829

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to unspecified error in the ksu user command. A local user can execute arbitrary code on the system with root privileges.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

IBM AIX: 7.1 - 7.2.5

External links

http://aix.software.ibm.com/aix/efixes/security/ksu_advisory.asc

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.